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Dipsadoboa unicolor GÜNTHER, 1858

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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Günther's Green Tree Snake 
SynonymDipsadoboa unicolor GÜNTHER 1858: 138
Dipsadoboa unicolor — LOVERIDGE 1936: 35
Dipsadoboa unicolor viridiventris LAURENT 1956
Dipsadoboa unicolor viridiventris — PITMAN 1974
Dipsadoboa unicolor — RÖDEL & MAHSBERG 2000
Dipsadoboa unicolor — BÖHME et al. 2011: 45
Dipsadoboa unicolor — WALLACH et al. 2014: 232
Dipsadoboa unicolor — SPAWLS et al. 2018: 530 
DistributionUganda, Rwanda, Burundi, N/E/S Democratic Republic of the Congo (Zaire), Congo (Brazzaville), Central African Republic, Cameroon, Nigeria, Togo, Ghana, Ivory Coast, Guinea (Conakry), Liberia, Tanzania, Republic of South Sudan (RSS), Equatorial Guinea

Type locality: West Africa.  
Reproductionoviparous 
TypesType: BMNH 1946.1.4.84 (and possibly additional specimens). 
DiagnosisDiagnosis (genus): A typical boigine snake genus, which is closely related to Crotaphopeltis. The most prominent characters separating these two genera are the well-developed venom gland, the higher number of ventrals and subcaudals, and the usually three pointed parasphenoid in Dipsadoboa, and the absence of gular shields in Crotaphopeltis. (Rasmussen 1979: 152)


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CommentDistribution: Not reported from Benin according to ULLENBRUCH et al. 2010, but possibly Benin (Hughes 2013). For a map with localities in Equatorial Guinea see SÁNCHEZ-VIALAS et al. 2022.

Habitat: forest floor. Semi-arboreal (Harrington et al. 2018).

Type species: Dipsadoboa unicolor GÜNTHER 1858 is the type species of the genus Dipsadoboa GÜNTHER 1858.

Diet: Chameleons have been recorded in the diet of all other members of the D. werneri group (Rasmussen 1986; Haagner et al. 2000), and are plentiful in the forests of Mt Mabu (Branch & Tolley 2010; Branch et al. 2014) and Mt Ribáuè (Conradie et al. 2016). In contrast, frogs form the dominant diet of the D. aulica group (Stevens 1964; Broadley & Stevens 1971; Rasmussen 1989a).

Tables of scale counts etc across genus: Rasmussen 1993.

Key to species: Rasmussen 1993: 155

Groups: Rasmussen 1993 grouped the genus into 4 groups: the werneri group (werneri, shrevei), the aulica group (aulica, flavida), the duchesnei group (duchesnei, brevirostris), and the unicolor group (unicolor, isolepis, elongata). 
EtymologyNamed after the uniform green dorsal color. 
References
  • Böhme, Wolfgang, Mark-Oliver Rödel, Christian Brede & Philipp Wagner 2011. The reptiles (Testudines, Squamata, Crocodylia) of the forested southeast of the Republic Guinea (Guinée forestière), with a country-wide checklist. Bonn zoological Bulletin 60 (1): 35-61 - get paper here
  • Böhme, Wolfgang; Eberhard Fischer & Harald Hinkel 2023. Reptilien aus dem Irangi Forest, Provinz Kivu-Süd, Demokratische Republik Kongo. Sauria 45 (4): 29
  • BRANCH, WILLIAM R.; JULIAN BAYLISS, GABRIELA B. BITTENCOURT-SILVA, WERNER CONRADIE, HANLIE M. ENGELBRECHT, SIMON P. LOADER, MICHELE MENEGON, CRISTÓVÃO NANVONAMUQUITXO, KRYSTAL A. TOLLEY 2019. A new species of tree snake (Dipsadoboa, Serpentes: Colubridae) from ‘sky island’ forests in northern Mozambique, with notes on other members of the Dipsadoboa werneri group. Zootaxa 4646 (3): 541–563 - get paper here
  • Broadley, D. G. & HOWELL, K. M. 1991. A check list of the reptiles of Tanzania, with synoptic keys. Syntarsus 1: 1—70
  • Broadley, Donald G. and F. P. D. Cotterill. 2004. The reptiles of southeast Katanga, an overlooked 'hot spot'. [Congo]. African Journal of Herpetology 53 (1): 35-61. - get paper here
  • Chifundera, K. 1990. Snakes of Zaire and their bites. Afr. Stud. Monogr. (Kyoto) 10(3): 137-157.
  • Chippaux, Jean-Philippe & Kate Jackson 2019. Snakes of Central and Western Africa. Johns Hopkins University Press, 448 pp. [detaileld review in HR 51 (1): 161] - get paper here
  • Chirio, L. & Lebreton, M. 2007. Atlas des reptiles du Cameroun. MNHN, IRD, Paris 688 pp.
  • Günther, A. 1858. Catalogue of Colubrine snakes of the British Museum. London, I - XVI, 1 - 281 - get paper here
  • Harrington, Sean M; Jordyn M de Haan, Lindsey Shapiro, Sara Ruane 2018. Habits and characteristics of arboreal snakes worldwide: arboreality constrains body size but does not affect lineage diversification. Biological Journal of the Linnean Society 125 (1): 61–71 - get paper here
  • Hughes, B. 2013. Snakes of Bénin, West Africa. Bull. Soc. Herp. France 144: 101-159
  • Loveridge, A. 1936. African reptiles and amphibians in the Field Museum of Natural History. Zool. Ser. Field Mus. Nat. Hist., Chicago, 22 (1): 1-122 - get paper here
  • Mavoungou, L. B., Jackson, K., & Goma-Tchimbakala, J. 2024. Snake species assemblages across habitat types in four departments of the Republic of Congo, with emphasis on medically-relevant venomous species. Heliyon, e33583 - get paper here
  • O’Shea, M. 2018. The Book of Snakes. Ivy Press / Quarto Publishing, London, - get paper here
  • Pitman,C.R.S. 1974. A guide to the snakes of Uganda. Codicote, Wheldon & Wesley, L., 290 pp.
  • Portik DM, Jongsma GFM, Kouete MT, Scheinberg LA, Freiermuth B, Tapondjou WP, Blackburn DC. 2016. A survey of amphibians and reptiles in the foothills of Mount Kupe, Cameroon. Amphibian & Reptile Conservation 10(2) [Special Section]: 37–67 (e131)
  • Rasmussen J B 1993. A taxonomic review of the Dipsadoboa unicolor complex, including a phylogenetic analysis of the genus (Serpentes, Dipsadidae, Boiginae). Steenstrupia 19 (4): 129-196
  • Rödel M O; Mahsberg D 2000. Vorläufige Liste der Schlangen des Tai-Nationalparks/Elfenbeinküste und angrenzender Gebiete. Salamandra 36 (1): 25-38 - get paper here
  • SÁNCHEZ-VIALAS, A., CALVO-REVUELTA, M. & DE LA RIVA, I. 2022. Synopsis of the terrestrial Reptiles of Equatorial Guinea. Zootaxa 5202 (1): 1-197 - get paper here
  • Segniagbeto GLazcano. H., Trape J. F., David P., Ohler A., Dubois A. & Glitho I. A. 2011. The snake fauna of Togo: systematics, distribution and biogeography, with remarks on selected taxonomic problems. Zoosystema 33 (3): 325-360. DOI: 10.5252/z2011n3a4 - get paper here
  • Senter, P. J., & Chippaux, J. P. 2022. Biogeography of snakes in Liberia: Review and synthesis of current knowledge. Ghana Journal of Science, 63(1), 29-62 - get paper here
  • Sinsin B, Bergmans W(eds) 1999. Rongeurs, ophidiens et relations avec l’environnement agricole du Bénin. Cotonou (Éd. Flamboyant), 199 pp.
  • Spawls, S.; Howell, K.; Drewes, R.C. & Ashe, J. 2002. A field guide to the reptiles of East Africa. Academic Press, 543 pp. [reviews in HR 34: 396 and Afr. J. Herp. 51; 147] - get paper here
  • Spawls, Steve; Kim Howell, Harald Hinkel, Michele Menegon 2018. Field Guide to East African Reptiles. Bloomsbury, 624 pp. - get paper here
  • Sternfeld, R. 1917. Reptilia und Amphibia. In: Schubotz, H. (Hrsg.): Wissenschaftliche Ergebnisse der Zweiten Deutschen Zentral-Afrika-Expedition, 1910-1911 unter Führung Adolph Friedrichs, Herzog zu Mecklenburg. Leipzig: Klinkhardt & Biermann, [Band] 1, Zoologie, Lieferung 11; S. 407-510. - get paper here
  • Trape, J.-F. 2023. Guide des serpents d’Afrique occidentale, centrale et d’Afrique du Nord. IRD Éditions, Marseille, 896 pp.
  • Trape, J.F. & R. ROUX-ESTÈVE 1995. Les serpents du Congo: liste commentée et clé de détermination. Journal of African Zoology 109 (1): 31-50
  • TRAPE, JEAN-FRANÇOIS & CELLOU BALDÉ 2014. A checklist of the snake fauna of Guinea, with taxonomic changes in the genera Philothamnus and Dipsadoboa (Colubridae) and a comparison with the snake fauna of some other West African countries. Zootaxa 3900 (3): 301–338 - get paper here
  • TRAPE, Jean-François; Oleg MEDIANNIKOV & Mamadou Cellou BALDÉ 2023. Une nouvelle espèce de couleuvre arboricole du genre Dipsadoboa Günther, 1858 (Squamata : Colubridae : Colubrinae) d’Afrique de l’Ouest. Bull. Soc. Herp. Fr. (2023) 183: 1-13 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
  • Werner, F. 1897. Über Reptilien und Batrachier aus Togoland, Kamerun und Tunis aus dem Kgl. Museum für Naturkunde in Berlin. Verh. Zool.-Bot. Ges., Wien 47: 395-407 - get paper here
  • Werner, F. 1899. Ueber Reptilien und Batrachier aus Togoland, Kamerun und Deutsch-Neu-Guinea grösstentheils aus dem k. Museum für Naturkunde in Berlin. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 49: 132-157 - get paper here
  • Witte, G. F. de 1933. Reptiles récoltés au Conge Belge par le Dr. H. Schouteden et par M. G.-F. Witte. Ann. Mus. Conge belge Zool. Ser. 1 Tome III: 53-100.
 
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